The Army Corps of Engineers has awarded a contract worth up to $385 million for building temporary immigration detention centers to Kellogg Brown & Root, the Halliburton subsidiary that has been criticized for overcharging the Pentagon for its work in Iraq.

KBR would build the centers for the Homeland Security Department for an unexpected influx of immigrants, to house people in the event of a natural disaster or for new programs that require additional detention space, company executives said. KBR, which announced the contract last month, had a similar contract with immigration agencies from 2000 to last year . . . .

In recent months, the Homeland Security Department has promised to increase bed space in its detention centers to hold thousands of illegal immigrants awaiting deportation. In the first quarter of the 2006 fiscal year, nearly 60 percent of the illegal immigrants apprehended from countries other than Mexico were released on their own recognizance . . . .

"We are especially gratified to be awarded this contract," an executive vice president, Bruce Stanski, said in a statement, "because it builds on our extremely strong track record in the arena of emergency management support."